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Amiga Plus 1999 #2
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Amiga Plus CD - 1999 - No. 2.iso
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PPCxDMS
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src
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xdms.c
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C/C++ Source or Header
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1998-06-18
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13KB
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527 lines
/*
* xDMS v1.1 - Portable DMS archive unpacker - Public Domain
* Written by Andre R. de la Rocha <adlroc@usa.net>
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "cdata.h"
#include "pfile.h"
#include "crc_csum.h"
#ifdef UNDER_DOS
#include <io.h>
#include <fcntl.h>
#endif
/* Program exit codes */
#define EXIT_OK 0
#define EXIT_FAIL 10
#define FNAME_MAXC 500
static void Usage(void);
static int strcmpnc(char *, char *);
static void strcpymax(char *, char *, int);
static void strcatmax(char *, char *, int);
static void ErrMsg(USHORT, char *, char *);
void main(int argc, char **argv){
USHORT i, cmd=0, opt=0, ret, ext, PCRC=0, pwd=0;
char iname[FNAME_MAXC+1], oname[FNAME_MAXC+1], cmdstr[FNAME_MAXC+20], *tname, *inm, *onm, *p, *q, *destdir=NULL;
if (argc < 3) {
Usage();
exit(EXIT_FAIL);
}
i = 1;
/* proccess options in the command line */
while ((i<argc) && (argv[i][0] == '-')){
if (strlen(argv[i])>2) {
fprintf(stderr,"Unknown option !\n");
Usage();
exit(EXIT_FAIL);
}
switch (tolower(argv[i][1])){
case 'q' :
opt = OPT_QUIET;
break;
case 'v' :
opt = OPT_VERBOSE;
break;
case 'd' :
if (++i == argc) {
Usage();
exit(EXIT_FAIL);
}
destdir = argv[i];
break;
case 'p' :
if (++i == argc) {
Usage();
exit(EXIT_FAIL);
}
PCRC = CreateCRC((UCHAR*)argv[i],(ULONG)strlen(argv[i]));
pwd = 1;
break;
default:
fprintf(stderr,"Unknown option !\n");
Usage();
exit(EXIT_FAIL);
}
i++;
}
if ((i == argc) || (strlen(argv[i])>1)) {
Usage();
exit(EXIT_FAIL);
}
switch(tolower(argv[i][0])) {
case 'u':
cmd = CMD_UNPACK;
break;
case 'z':
cmd = CMD_UNPKGZ;
break;
case 'x':
cmd = CMD_EXTRACT;
break;
case 't':
cmd = CMD_TEST;
break;
case 'v':
cmd = CMD_VIEW;
break;
case 'f':
cmd = CMD_VIEWFULL;
break;
case 'd':
cmd = CMD_SHOWDIZ;
break;
case 'b':
cmd = CMD_SHOWBANNER;
break;
default:
fprintf(stderr,"Unknown command !\n");
Usage();
exit(EXIT_FAIL);
}
if (++i == argc) {
Usage();
exit(EXIT_FAIL);
}
ext = EXIT_OK;
while (i < argc) {
if (!strcmpnc("stdin",argv[i])) {
inm = NULL;
} else {
strcpymax(iname,argv[i],FNAME_MAXC);
if ((strlen(iname)<4) || (strcmpnc(".dms",iname+strlen(iname)-4))) strcatmax(iname,".dms",FNAME_MAXC);
inm = iname;
}
i++;
/* generate the output filename */
if ((i < argc) && (argv[i][0]=='+')) {
if ((strcmpnc("stdout",argv[i]+1)==0) || (destdir && (strcmpnc("stdout",destdir)==0))) {
strcpy(oname,"");
onm = NULL;
} else {
if (destdir) {
strcpymax(oname,destdir,FNAME_MAXC-1);
p = oname + strlen(oname) - 1;
if (!strchr(DIR_SEPARATORS,*p)) {
*(p+1) = DIR_CHAR;
*(p+2) = '\0';
}
} else strcpy(oname,"");
strcatmax(oname,argv[i]+1,FNAME_MAXC);
if (((cmd == CMD_UNPACK) || (cmd == CMD_UNPKGZ)) && (strlen(oname)>0)) {
p = oname + strlen(oname) - 1;
if (strchr(DIR_SEPARATORS,*p)) {
if (inm) {
p = q = iname;
while(*p) {
if (strchr(DIR_SEPARATORS,*p)) q = p+1;
p++;
}
strcatmax(oname,q,FNAME_MAXC);
if ((strlen(oname)>4) && (strcmpnc(oname+strlen(oname)-4,".dms")==0)) {
if (cmd == CMD_UNPKGZ)
strcpy(oname+strlen(oname)-4,".adz");
else
strcpy(oname+strlen(oname)-4,".adf");
} else {
if (cmd == CMD_UNPKGZ)
strcatmax(oname,".adz",FNAME_MAXC);
else
strcatmax(oname,".adf",FNAME_MAXC);
}
} else {
if (cmd == CMD_UNPKGZ)
strcatmax(oname,"stdin.adz",FNAME_MAXC);
else
strcatmax(oname,"stdin.adf",FNAME_MAXC);
}
}
}
onm = oname;
}
i++;
} else if (destdir && (strcmpnc("stdout",destdir)==0)) {
strcpy(oname,"");
onm = NULL;
} else {
if (destdir)
strcpymax(oname,destdir,FNAME_MAXC-1);
else
strcpy(oname,"");
if ((cmd == CMD_UNPACK) || (cmd == CMD_UNPKGZ)) {
if (strlen(oname)>0) {
p = oname + strlen(oname) - 1;
if (!strchr(DIR_SEPARATORS,*p)) {
*(p+1) = DIR_CHAR;
*(p+2) = '\0';
}
}
if (inm) {
p = q = iname;
while(*p) {
if (strchr(DIR_SEPARATORS,*p)) q = p+1;
p++;
}
strcatmax(oname,q,FNAME_MAXC);
if ((strlen(oname)>4) && (strcmpnc(oname+strlen(oname)-4,".dms")==0)) {
if (cmd == CMD_UNPKGZ)
strcpy(oname+strlen(oname)-4,".adz");
else
strcpy(oname+strlen(oname)-4,".adf");
} else {
if (cmd == CMD_UNPKGZ)
strcatmax(oname,".adz",FNAME_MAXC);
else
strcatmax(oname,".adf",FNAME_MAXC);
}
} else {
if (cmd == CMD_UNPKGZ)
strcatmax(oname,"stdin.adz",FNAME_MAXC);
else
strcatmax(oname,"stdin.adf",FNAME_MAXC);
}
}
onm = oname;
}
if (opt == OPT_VERBOSE) {
if ((cmd == CMD_UNPACK)) {
if (inm)
fprintf(stderr,"Unpacking file %s to ",inm);
else
fprintf(stderr,"Unpacking data from stdin to ");
if (onm)
fprintf(stderr,"%s\n",onm);
else
fprintf(stderr,"stdout\n");
} else if ((cmd == CMD_EXTRACT) || (cmd == CMD_UNPKGZ)) {
if (inm)
fprintf(stderr,"Unpacking file %s\n",inm);
else
fprintf(stderr,"Unpacking data from stdin\n");
} else if (cmd == CMD_TEST) {
if (inm)
fprintf(stderr,"Testing file %s\n",inm);
else
fprintf(stderr,"Testing data from stdin\n");
} else if (cmd == CMD_SHOWDIZ) {
if (inm)
printf("Showing FILEID.DIZ in %s :\n",inm);
else
printf("Showing FILEID.DIZ in stdin :\n");
} else if (cmd == CMD_SHOWBANNER) {
if (inm)
printf("Showing Banner in %s :\n",inm);
else
printf("Showing Banner in stdin :\n");
}
}
#ifdef UNDER_DOS
if (!inm) setmode(fileno(stdin),O_BINARY);
if ((cmd == CMD_UNPACK) && (!onm)) setmode(fileno(stdout),O_BINARY);
#endif
if ((cmd == CMD_UNPKGZ) || (cmd == CMD_EXTRACT)) {
tname = tmpnam(NULL);
#ifdef UNDER_DOS
p = tname;
if (p) {
while (*p) {
if (*p == '/') *p = '\\';
p++;
}
}
#endif
ret = Process_File(inm, tname, CMD_UNPACK, opt, PCRC, pwd);
if (opt != OPT_QUIET) ErrMsg(ret, inm, "Temporary file");
if (ret == NO_PROBLEM) {
if (cmd == CMD_UNPKGZ) {
if (opt == OPT_VERBOSE) {
fprintf(stderr,"Repacking unpacked data with gzip\n");
}
if (onm)
#ifdef UNDER_DOS
/* DOS sucks */
sprintf(cmdstr,"gzip -c -f -q %s >%s",tname,onm);
#else
sprintf(cmdstr,"gzip -c -f -q \"%s\" >\"%s\"",tname,onm);
#endif
else
#ifdef UNDER_DOS
sprintf(cmdstr,"gzip -c -f -q %s",tname);
#else
sprintf(cmdstr,"gzip -c -f -q \"%s\"",tname);
#endif
if (system(cmdstr)) ret = ERR_GZIP;
if (opt != OPT_QUIET) ErrMsg(ret, inm, onm);
} else {
if (opt == OPT_VERBOSE) {
fprintf(stderr,"Extracting files from unpacked data with readdisk\n");
}
if ((onm) && (strlen(onm)>0))
#ifdef UNDER_DOS
sprintf(cmdstr,"readdisk %s %s",tname,onm);
#else
sprintf(cmdstr,"readdisk \"%s\" \"%s\"",tname,onm);
#endif
else
#ifdef UNDER_DOS
sprintf(cmdstr,"readdisk %s",tname);
#else
sprintf(cmdstr,"readdisk \"%s\"",tname);
#endif
if (system(cmdstr)) ret = ERR_READDISK;
if (opt != OPT_QUIET) ErrMsg(ret, inm, onm);
}
}
remove(tname);
} else {
ret = Process_File(inm, onm, cmd, opt, PCRC, pwd);
if (opt != OPT_QUIET) ErrMsg(ret, inm, onm);
}
if (ret != NO_PROBLEM) ext = EXIT_FAIL;
if ((ret == NO_PROBLEM) && (opt != OPT_QUIET)) {
switch (cmd) {
case CMD_UNPACK:
if (inm)
fprintf(stderr,"File %s was correctly unpacked to ",inm);
else
fprintf(stderr,"Data from stdin was correctly unpacked to ");
if (onm)
fprintf(stderr,"%s\n",onm);
else
fprintf(stderr,"stdout\n");
break;
case CMD_UNPKGZ:
if (inm)
fprintf(stderr,"File %s was correctly converted to ",inm);
else
fprintf(stderr,"Data from stdin was correctly converted to ");
if (onm)
fprintf(stderr,"%s\n",onm);
else
fprintf(stderr,"stdout\n");
break;
case CMD_EXTRACT:
if (inm)
fprintf(stderr,"The files were correctly extracted from %s\n",inm);
else
fprintf(stderr,"The files were correctly extracted from stdin\n");
break;
case CMD_TEST:
if (inm)
fprintf(stderr,"File %s is ok\n",inm);
else
fprintf(stderr,"Data from stdin is ok\n");
break;
default:
break;
}
}
if (opt != OPT_QUIET) fprintf(stderr,"\n");
}
exit((int)ext);
}
static int strcmpnc(char *s1, char *s2){
while (*s1 && (tolower(*s1)==tolower(*s2))) {s1++; s2++;}
return tolower(*s1)-tolower(*s2);
}
static void strcpymax(char *s1, char *s2, int max){
if (strlen(s2)>max){
memcpy(s1,s2,max);
*(s1+max) = 0;
} else
strcpy(s1,s2);
}
static void strcatmax(char *s1, char *s2, int max){
if (strlen(s1)+strlen(s2)>max){
memcpy(s1+strlen(s1),s2,max-strlen(s1));
*(s1+max) = 0;
} else
strcat(s1,s2);
}
static void Usage(void){
printf("\n");
printf(" xDMS v1.1 - Portable DMS archive unpacker - Public Domain\n");
printf(" Written by Andre R. de la Rocha <adlroc@usa.net> \n\n");
printf(" Usage: xdms [options] <command> {<dms_file[.dms]> [+output]} \n\n");
printf(" Commands :\n");
printf(" t : Test DMS archives\n");
printf(" u : Unpack DMS archives to disk images\n");
printf(" z : Unpack to disk images and compress it with gzip\n");
printf(" x : Extract files inside DMS archives using readdisk\n");
printf(" v : View DMS archives information\n");
printf(" f : View full information\n");
printf(" d : Show attached FILEID.DIZ\n");
printf(" b : Show attached Banner\n\n");
printf(" Options :\n");
printf(" -q : Quiet\n");
printf(" -v : Verbose\n");
printf(" -d <destdir> : Set destination directory\n");
printf(" -p <password> : Decrypt encrypted archives using password\n");
printf("\n");
}
static void ErrMsg(USHORT err, char *i, char *o){
if (!i) i = "stdin";
if (!o) o = "stdout";
switch (err) {
case NO_PROBLEM:
case FILE_END:
return;
case ERR_NOMEMORY:
fprintf(stderr,"Not enough memory for buffers !\n");
break;
case ERR_CANTOPENIN:
fprintf(stderr,"Can't open %s for reading !\n",i);
break;
case ERR_CANTOPENOUT:
fprintf(stderr,"Can't open %s for writing !\n",o);
break;
case ERR_NOTDMS:
fprintf(stderr,"File %s is not a DMS archive !\n",i);
break;
case ERR_SREAD:
fprintf(stderr,"Error reading file %s : unexpected end of file !\n",i);
break;
case ERR_HCRC:
fprintf(stderr,"Error in file %s : header CRC error !\n",i);
break;
case ERR_NOTTRACK:
fprintf(stderr,"Error in file %s : track header not found !\n",i);
break;
case ERR_BIGTRACK:
fprintf(stderr,"Error in file %s : track too big !\n",i);
break;
case ERR_THCRC:
fprintf(stderr,"Error in file %s : track header CRC error !\n",i);
break;
case ERR_TDCRC:
fprintf(stderr,"Error in file %s : track data CRC error !\n",i);
break;
case ERR_CSUM:
fprintf(stderr,"Error in file %s : checksum error after unpacking !\n",i);
fprintf(stderr,"This file seems ok, but the unpacking failed.\n");
fprintf(stderr,"This can be caused by a bug in xDMS. Please contact the author\n");
break;
case ERR_CANTWRITE:
fprintf(stderr,"Error : can't write to file %s !\n",o);
break;
case ERR_BADDECR:
fprintf(stderr,"Error in file %s : error unpacking !\n",i);
fprintf(stderr,"This file seems ok, but the unpacking failed.\n");
fprintf(stderr,"This can be caused by a bug in xDMS. Please contact the author\n");
break;
case ERR_UNKNMODE:
fprintf(stderr,"Error in file %s : unknown compression mode used !\n",i);
break;
case ERR_NOPASSWD:
fprintf(stderr,"Can't process file %s : file is encrypted !\n",i);
break;
case ERR_BADPASSWD:
fprintf(stderr,"Error unpacking file %s . The password is probably wrong.\n",i);
break;
case ERR_FMS:
fprintf(stderr,"Error in file %s : this file is not really a compressed disk image, but an FMS archive !\n",i);
break;
case ERR_GZIP:
fprintf(stderr,"Can't convert file %s : gzip failed !\n",i);
break;
case ERR_READDISK:
fprintf(stderr,"Can't extract files from %s : readdisk failed !\n",i);
break;
default:
fprintf(stderr,"Error while processing file %s : internal error !\n",i);
fprintf(stderr,"This is a bug in xDMS\n");
fprintf(stderr,"Please contact the author\n");
break;
}
}